This 4-wire wide-band air/fuel ratio sensor fits select 2001-2023 Lexus, Pontiac, Scion and Toyota applications in the upstream position and reports the exhaust air-fuel ratio so the engine computer can meter fuel precisely. A built-in heater brings the element to operating temperature quickly after a cold start.

Walker Products 350-64017 Air/Fuel Ratio Sensor Features:

• Fits 2007-2014 Lexus LS460; 2008-2012 Lexus IS F; 2022 Lexus ES350; 2005-2010 Pontiac Vibe; 2008-2009 Scion xD; 2016 Scion iM; 2001-2010 Toyota Highlander
• Fits 2004-2010 Toyota Matrix; 2004-2011 Toyota Prius; 2005-2011 Toyota Corolla; 2006-2014 Toyota Hiace; 2006-2012 Toyota Yaris; 2009-2023 Toyota Tacoma
• Fits 2010-2011 Toyota Sequoia; 2010-2012 Toyota Tundra; 2017-2018 Toyota Corolla iM; 2018-2022 Toyota C-HR
• Sensor location by application: B1S1 (bank and sensor number)
• 4-wire wide-band air/fuel ratio sensor
• Built-in heater for fast warm-up
• M18x1.5 threaded mounting with a 22 mm hex, 400 mm (15.7 in.) overall length
• Male square connector at the harness end
• Platinum electrode layer with a protective coating against combustion residue